Use Modems With Micro800 Controllers; Making A Df1 Point-To-Point Connection; Construct Your Own Modem Cable; Configure Serial Port - Allen-Bradley Micro830 User Manual

Chapter 5 Communication Connections
Use Modems with
Micro800 Controllers

Configure Serial Port

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Micro800 controllers do not support more than one hop (for example,
IMPORTANT
from EtherNet/IP → CIP Serial → EtherNet/IP).
Serial modems can be used with the Micro830 and Micro850 controllers.

Making a DF1 Point-to-Point Connection

You can connect the Micro830 and Micro850 programmable controller to your
serial modem using an Allen-Bradley null modem serial cable
(1761-CBL-PM02) to the controller's embedded serial port together with a
9-pin null modem adapter – a null modem with a null modem adapter is
equivalent to a modem cable. The recommended protocol for this configuration
is CIP Serial.

Construct Your Own Modem Cable

If you construct your own modem cable, the maximum cable length is 15.24 m
(50 ft) with a 25-pin or 9-pin connector. Refer to the following typical pinout for
constructing a straight-through cable:
DTE Device
(Micro830/850
Channel 0)
8 P - n i
7 X T D
4 R D X
2 G N D
1 B ) + (
8 A ) - (
5 D C D
6 C S T
3 R S T
You can configure the Serial Port driver as CIP Serial, Modbus RTU, ASCII or
Shutdown through the Device Configuration tree in Connected Components
Workbench.
X T
X R
G
D
D
D
C
R
Rockwell Automation Publication 2080-UM002G-EN-E - March 2015
DCE Device
(Modem, etc)
5 2 P - n i 9 P - n i
D 2 3
D 3 2
N D 7 5
C D 8 1
R T 0 2 4
R S 6 6
S T 5 8
S T 4 7